1 files changed, 254 insertions, 0 deletions
diff --git a/talk/app/webrtc/java/android/org/webrtc/EglBase14.java b/talk/app/webrtc/java/android/org/webrtc/EglBase14.java
new file mode 100644
index 0000000000..c6f98c3b31
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+++ b/talk/app/webrtc/java/android/org/webrtc/EglBase14.java
@@ -0,0 +1,254 @@
+/*
+ * libjingle
+ * Copyright 2015 Google Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *  1. Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *  2. Redistributions in binary form must reproduce the above copyright notice,
+ *     this list of conditions and the following disclaimer in the documentation
+ *     and/or other materials provided with the distribution.
+ *  3. The name of the author may not be used to endorse or promote products
+ *     derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package org.webrtc;
+
+import android.annotation.TargetApi;
+import android.graphics.SurfaceTexture;
+import android.opengl.EGL14;
+import android.opengl.EGLConfig;
+import android.opengl.EGLContext;
+import android.opengl.EGLDisplay;
+import android.opengl.EGLExt;
+import android.opengl.EGLSurface;
+import android.view.Surface;
+
+import org.webrtc.Logging;
+
+/**
+ * Holds EGL state and utility methods for handling an EGL14 EGLContext, an EGLDisplay,
+ * and an EGLSurface.
+ */
+@TargetApi(18)
+final class EglBase14 extends EglBase {
+  private static final String TAG = "EglBase14";
+  private static final int EGLExt_SDK_VERSION = android.os.Build.VERSION_CODES.JELLY_BEAN_MR2;
+  private static final int CURRENT_SDK_VERSION = android.os.Build.VERSION.SDK_INT;
+  private EGLContext eglContext;
+  private EGLConfig eglConfig;
+  private EGLDisplay eglDisplay;
+  private EGLSurface eglSurface = EGL14.EGL_NO_SURFACE;
+
+  // EGL 1.4 is supported from API 17. But EGLExt that is used for setting presentation
+  // time stamp on a surface is supported from 18 so we require 18.
+  public static boolean isEGL14Supported() {
+    Logging.d(TAG, "SDK version: " + CURRENT_SDK_VERSION
+        + ". isEGL14Supported: " + (CURRENT_SDK_VERSION >= EGLExt_SDK_VERSION));
+    return (CURRENT_SDK_VERSION >= EGLExt_SDK_VERSION);
+  }
+
+  public static class Context extends EglBase.Context {
+    private final android.opengl.EGLContext egl14Context;
+
+    Context(android.opengl.EGLContext eglContext) {
+      this.egl14Context = eglContext;
+    }
+  }
+
+  // Create a new context with the specified config type, sharing data with sharedContext.
+  // |sharedContext| may be null.
+  EglBase14(EglBase14.Context sharedContext, int[] configAttributes) {
+    eglDisplay = getEglDisplay();
+    eglConfig = getEglConfig(eglDisplay, configAttributes);
+    eglContext = createEglContext(sharedContext, eglDisplay, eglConfig);
+  }
+
+  // Create EGLSurface from the Android Surface.
+  @Override
+  public void createSurface(Surface surface) {
+    createSurfaceInternal(surface);
+  }
+
+  // Create EGLSurface from the Android SurfaceTexture.
+  @Override
+  public void createSurface(SurfaceTexture surfaceTexture) {
+    createSurfaceInternal(surfaceTexture);
+  }
+
+  // Create EGLSurface from either Surface or SurfaceTexture.
+  private void createSurfaceInternal(Object surface) {
+    if (!(surface instanceof Surface) && !(surface instanceof SurfaceTexture)) {
+      throw new IllegalStateException("Input must be either a Surface or SurfaceTexture");
+    }
+    checkIsNotReleased();
+    if (eglSurface != EGL14.EGL_NO_SURFACE) {
+      throw new RuntimeException("Already has an EGLSurface");
+    }
+    int[] surfaceAttribs = {EGL14.EGL_NONE};
+    eglSurface = EGL14.eglCreateWindowSurface(eglDisplay, eglConfig, surface, surfaceAttribs, 0);
+    if (eglSurface == EGL14.EGL_NO_SURFACE) {
+      throw new RuntimeException("Failed to create window surface");
+    }
+  }
+
+  @Override
+  public void createDummyPbufferSurface() {
+    createPbufferSurface(1, 1);
+  }
+
+  @Override
+  public void createPbufferSurface(int width, int height) {
+    checkIsNotReleased();
+    if (eglSurface != EGL14.EGL_NO_SURFACE) {
+      throw new RuntimeException("Already has an EGLSurface");
+    }
+    int[] surfaceAttribs = {EGL14.EGL_WIDTH, width, EGL14.EGL_HEIGHT, height, EGL14.EGL_NONE};
+    eglSurface = EGL14.eglCreatePbufferSurface(eglDisplay, eglConfig, surfaceAttribs, 0);
+    if (eglSurface == EGL14.EGL_NO_SURFACE) {
+      throw new RuntimeException("Failed to create pixel buffer surface");
+    }
+  }
+
+  @Override
+  public Context getEglBaseContext() {
+    return new EglBase14.Context(eglContext);
+  }
+
+  @Override
+  public boolean hasSurface() {
+    return eglSurface != EGL14.EGL_NO_SURFACE;
+  }
+
+  @Override
+  public int surfaceWidth() {
+    final int widthArray[] = new int[1];
+    EGL14.eglQuerySurface(eglDisplay, eglSurface, EGL14.EGL_WIDTH, widthArray, 0);
+    return widthArray[0];
+  }
+
+  @Override
+  public int surfaceHeight() {
+    final int heightArray[] = new int[1];
+    EGL14.eglQuerySurface(eglDisplay, eglSurface, EGL14.EGL_HEIGHT, heightArray, 0);
+    return heightArray[0];
+  }
+
+  @Override
+  public void releaseSurface() {
+    if (eglSurface != EGL14.EGL_NO_SURFACE) {
+      EGL14.eglDestroySurface(eglDisplay, eglSurface);
+      eglSurface = EGL14.EGL_NO_SURFACE;
+    }
+  }
+
+  private void checkIsNotReleased() {
+    if (eglDisplay == EGL14.EGL_NO_DISPLAY || eglContext == EGL14.EGL_NO_CONTEXT
+        || eglConfig == null) {
+      throw new RuntimeException("This object has been released");
+    }
+  }
+
+  @Override
+  public void release() {
+    checkIsNotReleased();
+    releaseSurface();
+    detachCurrent();
+    EGL14.eglDestroyContext(eglDisplay, eglContext);
+    EGL14.eglReleaseThread();
+    EGL14.eglTerminate(eglDisplay);
+    eglContext = EGL14.EGL_NO_CONTEXT;
+    eglDisplay = EGL14.EGL_NO_DISPLAY;
+    eglConfig = null;
+  }
+
+  @Override
+  public void makeCurrent() {
+    checkIsNotReleased();
+    if (eglSurface == EGL14.EGL_NO_SURFACE) {
+      throw new RuntimeException("No EGLSurface - can't make current");
+    }
+    if (!EGL14.eglMakeCurrent(eglDisplay, eglSurface, eglSurface, eglContext)) {
+      throw new RuntimeException("eglMakeCurrent failed");
+    }
+  }
+
+  // Detach the current EGL context, so that it can be made current on another thread.
+  @Override
+  public void detachCurrent() {
+    if (!EGL14.eglMakeCurrent(
+        eglDisplay, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_SURFACE, EGL14.EGL_NO_CONTEXT)) {
+      throw new RuntimeException("eglMakeCurrent failed");
+    }
+  }
+
+  @Override
+  public void swapBuffers() {
+    checkIsNotReleased();
+    if (eglSurface == EGL14.EGL_NO_SURFACE) {
+      throw new RuntimeException("No EGLSurface - can't swap buffers");
+    }
+    EGL14.eglSwapBuffers(eglDisplay, eglSurface);
+  }
+
+  public void swapBuffers(long timeStampNs) {
+    checkIsNotReleased();
+    if (eglSurface == EGL14.EGL_NO_SURFACE) {
+      throw new RuntimeException("No EGLSurface - can't swap buffers");
+    }
+    // See https://android.googlesource.com/platform/frameworks/native/+/tools_r22.2/opengl/specs/EGL_ANDROID_presentation_time.txt
+    EGLExt.eglPresentationTimeANDROID(eglDisplay, eglSurface, timeStampNs);
+    EGL14.eglSwapBuffers(eglDisplay, eglSurface);
+  }
+
+  // Return an EGLDisplay, or die trying.
+  private static EGLDisplay getEglDisplay() {
+    EGLDisplay eglDisplay = EGL14.eglGetDisplay(EGL14.EGL_DEFAULT_DISPLAY);
+    if (eglDisplay == EGL14.EGL_NO_DISPLAY) {
+      throw new RuntimeException("Unable to get EGL14 display");
+    }
+    int[] version = new int[2];
+    if (!EGL14.eglInitialize(eglDisplay, version, 0, version, 1)) {
+      throw new RuntimeException("Unable to initialize EGL14");
+    }
+    return eglDisplay;
+  }
+
+  // Return an EGLConfig, or die trying.
+  private static EGLConfig getEglConfig(EGLDisplay eglDisplay, int[] configAttributes) {
+    EGLConfig[] configs = new EGLConfig[1];
+    int[] numConfigs = new int[1];
+    if (!EGL14.eglChooseConfig(
+        eglDisplay, configAttributes, 0, configs, 0, configs.length, numConfigs, 0)) {
+      throw new RuntimeException("Unable to find any matching EGL config");
+    }
+    return configs[0];
+  }
+
+  // Return an EGLConfig, or die trying.
+  private static EGLContext createEglContext(
+      EglBase14.Context sharedContext, EGLDisplay eglDisplay, EGLConfig eglConfig) {
+    int[] contextAttributes = {EGL14.EGL_CONTEXT_CLIENT_VERSION, 2, EGL14.EGL_NONE};
+    EGLContext rootContext =
+        sharedContext == null ? EGL14.EGL_NO_CONTEXT : sharedContext.egl14Context;
+    EGLContext eglContext =
+        EGL14.eglCreateContext(eglDisplay, eglConfig, rootContext, contextAttributes, 0);
+    if (eglContext == EGL14.EGL_NO_CONTEXT) {
+      throw new RuntimeException("Failed to create EGL context");
+    }
+    return eglContext;
+  }
+}